Electric-switch mechanism.



v navni n. convoy, orcmcaso,

ter intended for'use inelectric lamp sockets y or the like.

` A STATES-PATENT o rumors, Assron'on racrunnrccourm, ammo, omo, a conroiunou or onto.

` xnclumsn.

same,`re`ference being had to tbe accompanying dra wings, and tol the;A characters of refer- ,ence marked thereon, whichform a part of this specification. 'i

My invention relates to electricswitching devices of the quick make andbreak type, and` particularly to switches of this 'charac- `The'object oftmy inventionisthe p ro-` vision of an improvedy electric switchlng mechanism of the class described which is `compactin form, simple, durable and inex-` pensive in .its constrlvlctlon, andfhlghly elli- (-,ientyi'n its operation, whereby to enhance the practicability and commerclal value of mechanisms .of this character. My switch v Vis also capable of beingyeasily and yquickly 'assembled which adds to its commercial `value. l

The invention isfully described in the following specification, n. and while, in its` y broader` aspect, it is capable of embodiment 'in numerous forms, a preferred and several' modified..` embodiments thereof are illus.- tratei in `the accompanying drawings, in whicl,`- l A Figure 1 is a central longitudinal section i' of a socket' embodying the' preferred form the switch in full. `Fig.2`i's an inner vend viewof the of my switch, withparts o socket with the cap members ofthe shell and interior insulating body removed.l Fi 3 is a. section onthe line X in Fig. 2. F1g.4`

ythereotffwithfthe cap y `and"iiiterior insulation removed. Fig. 9 is a view of` the outer or lamp receiving end of is a view of theouter or lamp at tachingfendl of the socket. Fig 5 isa perspective view of the bridging member of the switch.` Fig. A,6 is alsectlonal -view ofthe-switch mecha\l 'nism separated 'from the socket. Fig. 7 is a central longitudinal section of a socket-embodying-a` modiiied formof my'switching mechanism. Fig. 8 is an inner end view members of the shell embodying and the', s'h

Hmmal, wires lthe socket.` Fig. 1U is a i perspective "iew of To rn): Yosr junothe bridging member of the' switch.- Fig. 11

ls a view slmilar to Fig. 7, with the socket the different modified formof the invention. Fig. 12 is an inner end view thereof with the c1 ip members of the shell and interior insulation removed. Fi'. 18

` is :1n-outer end` vie'v of the socket. Fig. 14

is a detail' of a pori ion of theswitch mecha-` msm. Fig. 15 ls'a sectional viewof a portion of ,a socket embodying a different slightly modified form` of the invention.

-Fig.,16 is a perspective 'view'of a switch of the pull'chain tyis embodying the invention. Fig. 17 is a cngitudinal section thereof, and `i slightly modfied form of switch.

Referring 'to the lrawings, 1 and 2 desigrv -nate .y the base land cap parte,v respectively, of the interior insul itingbody of the sockets herein shown, and 3and4`designate the body and cap port ions,v respectively, of an inclosing shell for the insulating arts of the socket,` as is customarily emp oyed in certain ty s of sockets of the character described. e parts 3 and 4 of the shell are separably'secured together in any suitable y, `or convenient manner, as is well understood] in the art. Y

.The partsl and ofthe interior body in sulation of the sock et coperate, in the pres ent instance, to form a closed, or insulat 'ingly closed, chamber 5in which. the switch i mechanism s locate l. The insulatingcap 2` 4 ha\'e centrally disposed, fregistering o mugs 6 through which `ter,

may be introduced into said The cap 2,-1 in the presentine. stance, is r,rovided on its inner side, or in#v teriorly o the chainber 5, with a `pair of,` sbinding screws 8,` which serve tobind the` lca chamber.

g. 18 is a perspecth'e view of av terminal wires 7 `to respective contact lates' 9 and 10, which are carried by the insu ating v100 cap on the inner side thereof.` These contact plates, in the present instance, have firi-` rs 11 a d 12, respectively projectingl Y t erefrom'rint'o the lchamber5l lengthwise" of the socket and th ese fingers, when the in-` sulating parts `1 ant, 2 arein assembled position, have contact with` respective contact kfingers 13, 414, whiclrrise within the `cham-. fber 5 in vsubstantial parallelism with theA fin rs 11, 12.` I

e coptact 14, in the present instance,

pro'ectswfroln orl [ha electrical connection w Wit theinner :end 'thejcustomary screw shell 1 5, whieh;. i`

of the insulating. partandforms the side contactforthe lamp, connecting plug, or

other attachment, inserted into the socket, as is Well understoodl .in the art. The screw shell is insulatingly spaced from the outer end of the shell part 3 by an insulating sleeve' 16. The other contact 1.3 of the set, which is carried by the insulating part 1, is intended to have connection with the usual center contact 17 of the socket through the bridging member of the switch mechanisnr which forms the present invention.

form of my 'switch mechanism, which is I illustrated in Figs. 1 to 6 ofthe drawings,l r,18 designates the bridgingmcmber of the i switch, which is carried for rocking movements Within the chamber 5 by a Up-shaped chair or bracket '15) secured to the bottom of said chamber.y The bridging member 1 8, in the Vpresent instance, comprises two side bars 20, 20 which are connected together adja-V cent to one end of the bridging member by cross-pieces 21 and 22, the piece 21 being disposed'at what may bejtermed therear end of the bridging member and the piece 22 sofbein disposed at the fulcrum point of said i mem er.- Trunnions or pivot studs 423 project from the ends of the cross.- piece 21 in an upright bearing part 26 which ro-v jects'upward fromy the rear end of the .e air` 19. `The shaft 25 after projecting through the bearing standards 26 enters and passes through openings 27 and28 provided, respectively, in the cross-pieces 21- and 22 of the bridging member.' The opening 28 is necessarily of elongated form in the plane of rocking movements of the cross-piece 21 to permitthe .desired rocking of the bridging member 18 transversely ofthe shaft 25. In order to prevent rocking movements of the `bridging member 18 until the key shaft 25 has been turned a predetermined extent, said shat,"0r at. least the portion thereof which projects through the opening 27, is flattened in form and said opening' is provided with circular end portions of a suitable size to prevent a free turning ofthe shaft therein, and the portion' of the opening intermediate said "circular end portionis restrictedto a width substantially equa] to the width of the secured-'to the outer end' Referring' particularly toy the preferred the `bridge-member in one direction or the part 3 and insulating of .circular form while the opening 27 1s.

tation 'of the key.

A spring member 29 'is carried by the 79 shaft 25 to turn therewith and, in the .present instance, is disposed at the outer side of the cross-piece22.v This spring, in the present instance, is lof looped form and has its legs straddlmg the shaft 25 and 'coiled intermedia'te their ends about the respective ends of a pin 30, which is carried by the shaft 25 in transverse relation to the flat-- tened surface thereof. The looped end of the spring projects from the point 30 crosswiseof the-shaft and bears at its outer end against the outerside of thecross-piece 22 and serves to yieldingly force a rocking of other depending on the edge portion of theV cross-piece 22 against which the spring is hearing, asis readily apparenqby reference f i to Fig., 6. The free ends ofthe spring legs project forward from the pin 30 and are fixed .to the shaft 25 in any suitable oreonvenient manner.V

It is evident that upon a turning of the shaft 25 in either direction` the looped end of the spring 2,9 is revolubly movedahout the shaft axlsso' that its position is succes` sivelyshifted from adjacent to first one and then the other of opposing side edges of the 'cross-piece 22,' thereby exerting a spring pressure first a ainst one and then against the diametrical y opposed edge portion of the cross-piece 22 to impart rocking move-- ments in different directions to the bridging member.;v It is also evident that the switchis caused te have quick make and break movements,` whereby arcing` is prevented, by reason of the coperative actionof the elongated opening 27 and the'flat-V tened form of the shaft 25 preventing a rocking of the bridging member 18 until each half `turning movement of the key has been completed.' "1`lze holding of the bridging member againsrocking until the key has completed a hali\turning movement causes a storing of`l consi erable energy in the spring due to the inclin -d relation ofthe cross-piece 22 vto the shaft, thereby causing the springto impart a quick rocking movement to the bridging member as Soon as said memberv is released for said purpose.-

When the bridging member 18.is in one 'position of' its movement the forward or free end of one bar 20-n1akes contact with a registering portion 13 of the contactv 13 and tlicforward oryfree end of the other bar 20 makes contact with a registering .part 17a which either forms a part yof' or is electrically connected tothe center contact 17, as shown infFigs. 2 andf3. When theiJbridging member is in contactv Wit-hithe contacts land v 17 it is apparent that a-circuit is completed 13o lis mamen between said, contacts through the bridging i member, the parts 20,121 and 22- of sai memer being of electrical conductive vina- ,t'a.

n the modification inu'sima in Figs, 7

'toi 10V the switch mechanism is'substantially the same as that above described, except that the position of the bridging mechanism 4io i ivot-an theactuating spring n this form-of the invention bars, and 34'Ithe actuating spring, which isy carried bythe key-shaft in the same inan- 4nerlas the spring 29. 3 3"1s' th e one,

i elongated'opening 36,

2liV

. -off lthe key. t movements `of the bridging member.

' the thrust of the spring is reversed with respect to the operating key, andthe `Jositions of the bridging member are changed. l 31 designates the 'Side bars of the bridging member; 32 and the inner and outer cross-pieces for said Thev outer cross-piece trunni'ons 35 chuirr19, and ,is also the one which receives '25), while theV inner one provided with-,the which. is similaito the opening'27 of the first described construetion nndf'coperateswith the flattened forni `shaft to control the rockiin'g crosspiece 324 is the operation of 'this form of the invention is apparent from the foregoing descri tion.

I. In the 4v,form of Athe invention il iistrated in Figs, 11 i014, which is also otth'e key type, designates the bridging member of 4 end of the sprii together vand "the 'spring 46 is compressed however, provided with `the which are ]ournaled in the The the Switch which is pivoted atoneend thcreof tolli chair orfbracket member 11 that is 'the chamber 5 within secured to the base of Thevfree end of the when in one position.

` its rocking movement makes eontactvfwi'tli and connects the contact parts 13 anrlflf in '-thef m- 42 being circuit `'with the centereontact 17""ofthe `the case of the` preferred form' of the invention.; The meinber 40 has the parts 42 and` 43 i'isin from op- 'te side edges thereof in `aral el relation, of disk ormLand having i the, I A'gare-'8 opening Ltt-in its centi-al portion i prefer-rea; form of the switch, und i i 43` being 'ofc-ring through the chamber to the opening 27 in the the part form. `with tlie, opening` thereof' preferably ofy greater da-meter than the. length of the opening 44, best shown in ',Fig. 14.4 .The ke, shaft 4.5 projects 5 over the,bridging member-40 in transverse relation thereto and through `the p n1ts42 and 43 of said member.

of.. similar form The shaftisof iattened form-to,y adapt it V to,piisslthroiigh thevrestricted central ortion -ofthe opening only when one o'v n row. edges-of the` -shaftl isiin register ywith such, portion.

lengthwise of the ,shafts-'iron i The finger` thelshaift-t and pre1 ts e6.. is Ported non erbe and ne"v naif edge Athereof` and into then-1mi 1 part ofI ,bridging A ,coiled compression "spring 47 isdisposedf betiveen t te tgenar-l cross-PNC@ opening row gradually ling inemb the shift 45 ma finger miniseries to' c'aiise Vthe free end-portion of'tlie finger. to

. haven yielding o ntward bearing against the inner peripheral edge of Vthe ring )part 1,13 whereby to influe nce e rocking movement ot thrust apa-rt imn er iutely after the shaft has moved from one end portion to the other-of the opening 44` a ud that the'spring finger is drawn toward the shaft 'during the succeeding the shaft 4and spring finger are' thecl'osest half rotation thereof that the greatest extent when the shaft h as com pleted its half tiirn, thus causing eachhalf rotation ofthe :shaft to A spring linger46 and its springv 47 to impart a vrocking nioveuent to, the bridging ineinber 40'when a narrow edge' of the shaft has moved into register with the restricted central portion of the opening.

.'lhefeonstruciion,shown in Fig. .l5 is the same as that lust described except that a sj'iring linger 48 is substituted for the pivoted finger t6 au] coiled compression spring 47and tl'ieke)r shaft whirh'is designated 4!) is only narroii'ed at the `iortiou thereof whichprojerts 1 hrough the ligure-8 opening in the part 42. The kry shaft in each of Figs. 11,12 and "15 is jourualed atthe end thereof adjacent to the hey Vhead-iu a 'bearing stani'lard.v i() and at thezopposite end thereof'i'n abearing standai'il'l;

It is apparent that in each form-fof {my invention eribefore described the'bri( gp'rovided with an opening loifigureforni which eopera'ites with Va flattenedportion ofthe key'shaftto control the rocking.v or circuit lmaking and Vbreaking movements of said member, and that the .part for actua ting the' `rocking movements of the bridging mend-ier isc'arriedbyand p keys-shaftI and acts `aga-inst the bridging n' embeiin such abmannei that the energy of vsaid part isrestored after each member 'rocking operation. i y

In Figs. 16, 17 andV 1'8 are illustrated-.two forms of the inventionV embodied in 4switches of the pull ch iin type. Referring particularl to Figs. 16 and 17, 60 designates'tlie bri( ging-mem] er of the switch, said member bei ng of U.` ha pe and ,pivoted at its inner' end for ri'ieking ino venients to spaced opstanding .arms Glfof 'al chair; or The legs of the bridging meinber() are connected adjace it to their .inner ends by a 63 which is rovided 'with' un 64, the end wa s' ofovhich have inward y projecting l\lgs "65.`

A reciproca tory controlA member 'org-slide r66V rejects tl irough the opening'flM in.,`the, or recipro-` bri ging member and is guided store energy in the bracket member 62.

the bridging men ibfer40 in first one direction 70 outcry movements-'by arms 67, 'which rise in spaced rela-tionf `gpm-the forward end of the 'l l?. yan, arm 68, which rises bracket 62,*and dy `from the .rear en of said bracket, intermediate the arms 61 a-ndjisfprovided with a guide opening .69 through which the slide projects,v The slide G6 is provided in its4 forward end portion "with an elongated op'eniilig'() and in4 each side edge, in the present instance,with apnotchfl, which, 'when moved in register with 'the respective lug 65, permits a passage of such lug theretlirl'iugli and a consequent rocking of the bridgiidinember in the desired direct-ion.` -A spring 'nger 72 is `carried by the bracket 62 and acts on the slide G6 to normally hold it at the .limit of' its foi '\\'ai"d movement,- in

v which position the notches7 1' stand oiitfof register with the lug 65, as shown-in Fig. 16.

"Ar plungergB lprojects loosely through an opening 74 in the; forward endv wall ofthe opening and has its forward or outer end -lieaded, as at`75, to coact with the foi'- ward end -ot the slide 66 to limit theinwaid f' linwenienlifai'f-:fithc plunger relative` thereto, .and-has itsinne end forked, as at 76, with its arms extendingin opposite directions 'in .the plane. of rocking movements of the bridging "n 'ieniben A coiled compression spi-innr TT mounted onthe plunger 73 'intermediate theforked end 76 thereof and the outer end wallv ofthe slideopen'ing 70 and serves to normally retain the plungerin the positions indicated in the figures. T he rear end of'theslide 66 is adapted for'attaching to a. pull chainl oroth'er tension member not shown).

' In the operation ofA this form of switch the operator elfects v a rearward Vmo vement of the slide part 6G- Lagainst the tension of the spring linger 72, thusymoving the plunger 73 rearward relative to .v the bridging membei.`

. and causing` one` of tlle fork arms 76 thereof to engage tlie'regstei'ing'edge portion ofthe Lcross-piece 63 of thebridging member. the lower edge offs-aid cross-piece, in'the present.

instance, being engaged, as is apparentby reference toFIg.' 1T. The plunger. l. now stands lstill duringthe continued. rearward .movement of tlie` slide-part, thus effet-.ting a compression or storing ofa'dditi'onal energy in the spring TT. lllien the slide has been moved rearward a suliieient distance to place .tlie notches 'l'thcijein in register with -the lugv on the bridging'i'nenibcii` said' member, in the present instance. is released foi: dow`1i- 'ward rocking movements and tliepFQSSui-e of the plunger- T3 against the lower edge of l the cross-piece, 63 etliects annick li'iiinwai'd rocking ot' the bridging member ftheiebv causing either a making orbreziki Athe electric circuit in which the switch isdis-v posed. 'depending on Vthe vposition of the-con-` lVhen the slide 66 Ihas returned toits normal ters Patent, is,

ymay'l be stopped at the point-of registerv of the lugs '65 and notches 71, the slide is rovided with one or more Vshoulders 78, w ich enact. with the inner or. looped end portion of the bridging member for such purpose.

The form of switch illustrated in Fig. 18 is substantially the same as that last described except that the form of the slide or control member and its manner of carrying the actuating plunger is slightly changed. The bracket is' also slightly c anged to meet the changed form of the slide. In this figure, 8 0 designates the bridging member; 81 the cross-piece of said member; 82 the oontrolor slide member which projects through the open-ing 83' in the cross-piece'81 and-has.

leo

slide. It is not thought nessarjy to'give a more detailedgdescription of this form of the invention, as its operation is the saine as that of thepull switch const-ructionf'liist above described; I

I wish itunderstoodthat while I have particularly described my invention in` connection vwith a socket of a p'rticularconstruction, I do not' thereby intendto limit its use, the embodiments shown .being merely .forA illustrative purposes. It is alS to 'be understood that the invention is noti-'limited to anwr particular construction and arrangement o f th""]'iai"ts butv is capable 4'of other modifications in whole or in p'a'rt. from those,

ting from the spirit illustrated without'delig ot' tlie'claims. 1 y 'Having thus described my iii'veiition,4 what I claim as new, and desire to secure by Let# nient carriedfln 'the key fdr rotation therewith and dingen thefbridging member t0 Alos Y thrustfpart coacting with said member, said iii-geit to have rocking moveinents'when released b v said key.

-and a restrictedfintermediate portion, akey having a Vnarrowedshaftpart projecting through said openin v' for turning movements indthc endso the opening and for .movementfroin one portion-tothe other of vthe. opening when said narrowed shaitV portioii is at predetcriiiiied points in its turning` movement, and means operable to urge the bridging iiieiiibeil `to have movements in first one direction and then the other relative tothe key-shaft upon a turning of said shaft.

3. In a lswitch of the class described, a ment having spaced electrically connected* bridging 'member mounted for rocking iiioveiiieiitsl and having spaced parts eac Aprovided with an opening witlr'ne 'ol-fjfsaid yopenings elongated and'restricted at4 its reiitral portion, a rotatable element projected through said openings and having n por-f tion enacting-with said elongated Aopening to a posite direction control tbe rocking movements of said membei', and means acting on said member to urge it to havero'cking movements in first one Iand then the yop iosite direction 'when saidelenient is rotate r y a -lrIn a switch of the lclass described, a bridging member mounted for rocking .mo`\ei ne1its, ii rotatable element having a {iai-t coperatiiig with a part of said memi'oij to control the rocking movements of the' member when the element is rotated, and spring means carried bodilyV by saidrelement for rotation therewithand urgin a rocking of said member in lirst one 'and t en the opwhen said 'element is rotated. i Y

5. In a switch of the class described, v-a

bridging member mounted for rocking'` movements, a rotatable element projected through a part ofv said member and coperatiiig therewith to permitroclcing movements thereof only atlpredetermined points in a rotation of said element, and ,spring means carried by said element and having a bridging member mounted for reciprocal movements to make and break a circuit, a

rotatable element projecting through a part` of said member,s'aid element anc member ,having parts whielrcoiiet to prevent movements ofthe niemberfe'xcept at 'predeterminedpoints 'ina-rotation .of Ysaid element, and means carried by, said element and acting on the member "agndf operable to urge a l movement by the control' member.

'movement ofthe member` in the direction iii' movement for. whichy it is released "by 'the element wlien at a.. .predetermined point in `its rotation.`

7.v In an electric switch, contacts,

ing moven ient to saidelementateach'fsuccessive mo `rement oyfsaid memb'erto element releasingiosition. "fifi" 8. In ai. elect 'c switch, a bridgingleside arms forming contact parts, said-feiement being; lmounted for rocking movements in a plan(y at right anglesto the lane -in which said side arms are lspaced and, avitig a A cross-bar c 'onnecting'lsaid side arms in spared relation to the roc 'ngaxisof-j'themelement and to tho free ends of its 'side arms, Ysaid bar having an opening therethrough lengthwise of said element, a" coiitrolmeinber movable relat ve to said,'elementan'd. 'disposed lengthwise thereof and projected through said' fme'mber and :b ar havsai bar openin p ing'p'arts whic coperateto -lock 'the element 'against rocking. movements until-.the memberV has been movejda' 'predeterruined` extent, andmeans carried .by said member and 'opera )le to impart snapshiftingm'ovements to said element "when" released for 9. In laii velectric switch.,V at-:bridgiing ele- "ierit mq ted vfor lrocking' 'rnovemeiasv 'und havin side armsforming'contact artsand space ltrii iisversely ofthe. 'plane-o rocking of,th'e eliment, a pair of bi-rs connecting said arms adjacent to the rockin axis thereof and spaced lengthwisel of t e element, orient leirit of said bars `forming an electri- 4an oecillatng bridging element-a. f oigmkin'g 'and breeki ng.. oojnnectic'p'n between Vsaid concal conne( tion between the-*side arms of said element' and one bai-having an opening` therethrough len hwise of the-element, a

control member ispdsed lengthwise 4of said element und projected .through said bar' opening ior movements relative tothe ele-` ment, said member f and bar having parts which coli perate to lock the element against.

shifting movements until the member has been moi a. predetermined extent, and means opi arable by movements of said member to aci; against one of said bai-s to impart snap movements to said element when released :for movement by the control inein ber.

10.1 In :in electric switclna bridgingelement mounted for rocking movements to make and break an electric circuit, said element said in "....ind one of seid bars copera ..Mlieh the element' ungiiinst v rooting io'veiiients until tlie.gmeniber hns.

velement lievi W spaced trfiiisyerb.l

both said ,blur l "relative to said been moved ii predeteriiiined extent, .und

'ii'iesin'svenergizedby :i predetei'u'iined move- 1E.l

ment of said iiieiiibei :uid operable to not on one of said bilrs :it first one side :ind then the other of the member to impart snap .movements to said element when released. for movement by the control member.-

"'11. ,In an electric switch, :i bridging element mounted for rocking movements to iiiaki-i-iirld break :in electric circuit :ind hilving side Contact :irnisspiiced triiiisversely of the plane of rocking of the element und :i pair offcross-bnrs coiiiiectingrsnid side arms 4adjacent to the rocking-axis thereof und in spa-ced relation lengthwise .of the element, 'zi

rotatable control member projected through v fsaid'bars lengthwise off-the element :in d eo- -operatiiig with one of suid bars to permit fiioc ring iii'ovemcntsof the 'element' only :it

predetermined points in .n rotation .of said member, and yielding means carried by sind member .and acting on one of said bars to impart snap-shiftingfiiioven'ients to sii-1d ele-4 ment in first one direction :ind then the other Whensuccessively released lfor move'- ment by the control member.

, '12. In an electric switch, spaced. contacts,

a bridging element mounted for rocking I movements and movable to make' and break connection between sai-id contacts', said clement having a. part-projecting therefrom in 111 l s look the element spifcedrelntion tofits' rocking axis and trans-v viset'o its plane of .racking movements, a

n c"gitrotmein.ierniovirlile relative t'o said element ind disposednlengthwise thereof, said iiiember and element...I art eoperating to 1.11 until the member f uesbeen'fmoved 'a predeltermivned. extent, fand-:means carried by and -act'uaatedby movements of ...seid member -to store energy therei'm'iind. touct on lseid elezii'ient through its-'said ps rtf'to move it first in. oney direction und-then the other when successively released by-.savid member.

13. In :t switch of the class described, n

movements sind having spaced parts each provided with iin opening, with one of said rocking movementsl openings elongated andrestrieted at its ceiitml portion, ai control element movably propoints in m'iiiovenient of 'suidelement,and

spring means carried bodily -by said element and hin-'ing `n*thrust'pertcoiictiiig with sind member, said thrust part causing said member to have quick lrocking movements when .released for such purpose.

In testimony whereof, I have hereunto signed my mime to this specification.

DAVID D. ooiinoN. 

